Acta Cryst. (2007). C63, o378-o381 [ doi:10.1107/S0108270107022160 ]
Abstract: The benzoannelated diazapolyether macrocycles 6,7,9,10,17,18-hexahydro-5H,11H-8,16,19-trioxa-5,11-diazadibenzo[a,g]cyclopentadecene, C18H22N2O3, (I), 6,7,9,10,12,13,20,21-octahydro-5H,14H-8,11,19,22-tetraoxa-5,14-diazadibenzo[a,g]cyclooctadecene, C20H26N2O4, (II), and 6,7,9,10,17,18,20,21-octahydro-16H,22H-5,8,11,19-tetraoxa-16,22-diazadibenzo[a,j]cyclooctadecene 0.3-hydrate, C20H26N2O4·0.304H2O, (III), show different patterns of hydrogen bonding. In (I), the amine H atoms participate only in intramolecular hydrogen bonds with ether O atoms. In (II), the amine H atoms form intramolecular hydrogen bonds with the phenoxy ether O atoms and intermolecular hydrogen bonds with alkyl ether O atoms in an adjacent molecule, forming a chain linking the macrocycles together via an R22(10) motif. Molecules of (II) were found on a crystallographic twofold axis. In (III), the amine H atoms participate in a hydrogen-bond network with adjacent ether O atoms and with a water molecule [having a partial occupancy of 0.304 (6)] that links the molecules together via a C22(7) motif.
Formula: C18H22N2O3, C20H26N2O4 and C20H26N2O4·0.304H2O
 |   Structure factor file (CIF format) (89.1 kbytes) |
| Structure factor file (CIF format) (90.6 kbytes) |
| Structure factor file (CIF format) (100.2 kbytes) |
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